Really Good Emails - A large collection of good product email design.
Growth.Design Case Studies - Product tips… in a comic book format
Good Sales Emails - Best sales emails from great companies
Indie Hackers - Connect with fellow entrepreneurs, developers, and bootstrappers who are sharing the strategies and revenue numbers behind their companies.
Great Email Copy - A dose of emails from around the web.
Maker Mag - The first magazine for indie makers. 🚀